Bulletin of the American Physical Society
APS March Meeting 2019
Volume 64, Number 2
Monday–Friday, March 4–8, 2019; Boston, Massachusetts
Session L41: Heterostructures and Thin Films for Skyrmions
11:15 AM–2:15 PM,
Wednesday, March 6, 2019
BCEC
Room: 209
Sponsoring
Units:
GMAG DMP
Chair: Andrew Kent, New York Univ NYU
Abstract: L41.00002 : Prediction and discovery of all-quantum skyrmions at room temperature
11:51 AM–12:03 PM
Presenter:
Felix Buettner
(Massachusetts Institute of Technology)
Authors:
Felix Buettner
(Massachusetts Institute of Technology)
Lucas Caretta
(Massachusetts Institute of Technology)
Ivan Lemesh
(Massachusetts Institute of Technology)
Maxwell Mann
(Massachusetts Institute of Technology)
Kohei Ueda
(Massachusetts Institute of Technology)
Bastian Pfau
(Max Born Institut)
Christian Günther
(TU Berlin)
Piet Hessing
(Max Born Institut)
Alexandra Churikova
(Massachusetts Institute of Technology)
Christopher Klose
(Max Born Institut)
Michael Schneider
(Max Born Institut)
Dieter Engel
(Max Born Institut)
Colin Marcus
(Massachusetts Institute of Technology)
David Bono
(Massachusetts Institute of Technology)
Kai Bagschik
(DESY)
Stefan Eisebitt
(Max Born Institut)
Geoffrey S Beach
(Massachusetts Institute of Technology)
In ferri- and antiferromagnetic materials, stray fields play no significant role. We predicted theoretically [5] and confirmed experimentally [6] that a different type of skyrmion can exist in these materials at room temperature, stabilized by all-quantum interactions. These skyrmions are insensitive to classical fields, exist even at zero external field, and can be as small as ~10 nm in diameter. Finally, they are also created by quantum spin-orbit torques [7].
[1] Büttner et al. Nat Phys 11, 225 (2015)
[2] Woo et al. Nat Mat 15, 501 (2016)
[3] Moreau-Luchaire et al. Nat Nano 11, 444 (2016)
[4] Boulle et al. Nat Nano 11, 449 (2016)
[5] Büttner et al. Sci Rep 8, 4464 (2018)
[6] Caretta, Mann, Büttner, et al. Nat Nano in press (2018). doi:10.1038/s41565-018-0255-3
[7] Büttner et al. Nat Nano 12, 1040 (2017)
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